Above- and Belowground Biomass Allocation in Shrub Biomes across the Northeast Tibetan Plateau

NWIPB OpenIR

	Above- and Belowground Biomass Allocation in Shrub Biomes across the Northeast Tibetan Plateau
	Nie, Xiuqing ; Yang, Yuanhe ; Yang, Lucun ; Zhou, Guoying
	2016-04-27
发表期刊	PLOS ONE
摘要	Biomass partitioning has been explored across various biomes. However, the strategies of allocation in plants still remain contentious. This study investigated allocation patterns of above-and belowground biomass at the community level, using biomass survey from the Tibetan Plateau. We explored above-and belowground biomass by conducting three consecutive sampling campaigns across shrub biomes on the northeast Tibetan Plateau during 2011-2013. We then documented the above-ground biomass (AGB), below-ground biomass (BGB) and root: shoot ratio (R/S) and the relationships between R/S and environment factors using data from 201 plots surveyed from 67 sites. We further examined relationships between above-ground and below-ground biomass across various shrub types. Our results indicated that the median values of AGB, BGB, and R/S in Tibetan shrub were 1102.55, 874.91 g m(-2), and 0.85, respectively. R/S showed significant trend with mean annual precipitation (MAP), while decreased with mean annual temperature (MAT). Reduced major axis analysis indicated that the slope of the log-log relationship between above-and belowground biomass revealed a significant difference from 1.0 over space, supporting the optimal hypothesis. Interestingly, the slopes of the allometric relationship between log AGB and log BGB differed significantly between alpine and desert shrub. Our findings supported the optimal theory of above-and belowground biomass partitioning in Tibetan shrub, while the isometric hypothesis for alpine shrub at the community level.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/58125
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Nie, Xiuqing,Yang, Yuanhe,Yang, Lucun,et al. Above- and Belowground Biomass Allocation in Shrub Biomes across the Northeast Tibetan Plateau[J]. PLOS ONE,2016.
APA	Nie, Xiuqing,Yang, Yuanhe,Yang, Lucun,&Zhou, Guoying.(2016).Above- and Belowground Biomass Allocation in Shrub Biomes across the Northeast Tibetan Plateau.PLOS ONE.
MLA	Nie, Xiuqing,et al."Above- and Belowground Biomass Allocation in Shrub Biomes across the Northeast Tibetan Plateau".PLOS ONE (2016).